<nav>
    <a href="<?php e_page("home","index"); ?>" class="<?=0==$r['current']?'select':'';?>">首页</a>
    <a href="<?php e_page("article","list","menu_id=34"); ?>" class="<?=34==$r['current']?'select':'';?>">通知公告</a>
    <a href="<?php e_page("article","list","menu_id=29"); ?>" class="<?=29==$r['current']?'select':'';?>">规章制度</a>
    <a href="<?php e_page("article","list","menu_id=37"); ?>" class="<?=37==$r['current']?'select':'';?>">团学组织</a>
    <a href="<?php e_page("article","list","menu_id=3"); ?>" class="<?=3==$r['current']?'select':'';?>">学生资助</a>
    <a href="<?php e_page("article","list","menu_id=2"); ?>" class="<?=2==$r['current']?'select':'';?>">日常管理</a>
    <a href="<?php e_page("article","list","menu_id=19"); ?>" class="<?=19==$r['current']?'select':'';?>">学生党建</a>
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</nav>